920=(32)20=32.20=340
2713=(33)13=33.13=339
Mà 40>39
=>340>339
Vậy 920>2713
2713 = 913.3 = 939
Vì 920 < 939 Nên 920 < 2713
920=(32)20=32.20=340
2713=(33)13=33.13=339
Vì 40>39=>3^40>3^39=>9^20>27^13
ta co 9^20=(3^2)^20=3^40
27^13=(3^3)^13=3^39
mà 40>39 => 9^20>27^13